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commands.c
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commands.c
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/*
* TwinSock - "Troy's Windows Sockets"
*
* Copyright (C) 1994-1995 Troy Rollo <troy@cbme.unsw.EDU.AU>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the license in the file LICENSE.TXT included
* with the TwinSock distribution.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <stdio.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include <sys/socket.h>
#include <fcntl.h>
#include "twinsock.h"
#include "tx.h"
#include "wserror.h"
#include "sockinfo.h"
#ifdef NEED_H_ERRNO
extern int h_errno;
#endif
#ifdef NO_H_ERRNO
#define h_errno errno
#endif
#ifndef AF_UNSPEC
#define AF_UNSPEC 0
#endif
#ifndef AF_UNIX
#define AF_UNIX -1
#endif
#ifndef AF_INET
#define AF_INET -1
#endif
#ifndef AF_IMPLINK
#define AF_IMPLINK -1
#endif
#ifndef AF_PUP
#define AF_PUP -1
#endif
#ifndef AF_CHAOS
#define AF_CHAOS -1
#endif
#ifndef AF_NS
#define AF_NS -1
#endif
#ifndef AF_ISO
#define AF_ISO -1
#endif
#ifndef AF_ECMA
#define AF_ECMA -1
#endif
#ifndef AF_DATAKIT
#define AF_DATAKIT -1
#endif
#ifndef AF_CCITT
#define AF_CCITT -1
#endif
#ifndef AF_SNA
#define AF_SNA -1
#endif
#ifndef AF_DECnet
#define AF_DECnet -1
#endif
#ifndef AF_DLI
#define AF_DLI -1
#endif
#ifndef AF_LAT
#define AF_LAT -1
#endif
#ifndef AF_HYLINK
#define AF_HYLINK -1
#endif
#ifndef AF_APPLETALK
#define AF_APPLETALK -1
#endif
#ifndef AF_NETBIOS
#define AF_NETBIOS -1
#endif
#define rangeof(x) (sizeof(x) / sizeof(x[0]))
static int HostSocketFamily[] =
{
AF_UNSPEC, /* unspecified */
AF_UNIX, /* local to host (pipes, portals) */
AF_INET, /* internetwork: UDP, TCP, etc. */
AF_IMPLINK, /* arpanet imp addresses */
AF_PUP, /* pup protocols: e.g. BSP */
AF_CHAOS, /* mit CHAOS protocols */
AF_NS, /* NS, IPX and SPX */
AF_ISO, /* ISO protocols */
AF_ECMA, /* european computer manufacturers */
AF_DATAKIT, /* datakit protocols */
AF_CCITT, /* CCITT protocols, X.25 etc */
AF_SNA, /* IBM SNA */
AF_DECnet, /* DECnet */
AF_DLI, /* Direct data link interface */
AF_LAT, /* LAT */
AF_HYLINK, /* NSC Hyperchannel */
AF_APPLETALK, /* AppleTalk */
AF_NETBIOS /* NetBios-style addresses */
};
static int HostSocketType[] =
{
0,
SOCK_STREAM,
SOCK_DGRAM,
SOCK_RAW,
SOCK_RDM,
SOCK_SEQPACKET
};
#ifndef IPPROTO_IP
#define IPPROTO_IP 0
#endif
#ifndef IPPROTO_ICMP
#define IPPROTO_ICMP 1
#endif
#ifndef IPPROTO_GGP
#define IPPROTO_GGP 2
#endif
#ifndef IPPROTO_TCP
#define IPPROTO_TCP 6
#endif
#ifndef IPPROTO_PUP
#define IPPROTO_PUP 12
#endif
#ifndef IPPROTO_UDP
#define IPPROTO_UDP 18
#endif
#ifndef IPPROTO_ND
#define IPPROTO_ND 77
#endif
static int HostSocketProtocol[] =
{
IPPROTO_IP, IPPROTO_ICMP, IPPROTO_GGP, 3, 4,
5, IPPROTO_TCP, 7, 8, 9,
10, 11, IPPROTO_PUP, 13, 14, 15, 16, IPPROTO_UDP, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
70, 71, 72, 73, 74, 75, 76, IPPROTO_ND, 78, 79
};
#ifndef SO_ACCEPTCONN
#define SO_ACCEPTCONN 0
#endif
#ifndef SO_USELOOPBACK
#define SO_USELOOPBACK 0
#endif
static struct
{
int iWindows;
int iHost;
} HostSocketOption[] =
{
{ 0x0001, SO_DEBUG },
{ 0x0002, SO_ACCEPTCONN },
{ 0x0004, SO_REUSEADDR },
{ 0x0008, SO_KEEPALIVE },
{ 0x0010, SO_DONTROUTE },
{ 0x0020, SO_BROADCAST },
{ 0x0040, SO_USELOOPBACK },
{ 0x0080, SO_LINGER },
{ 0x0100, SO_OOBINLINE }
};
static int
GetFamily(int x)
{
return (x < rangeof(HostSocketFamily)) ? HostSocketFamily[x] : x;
}
static int
RevFamily(int x)
{
int i;
for (i = 0; i < rangeof(HostSocketFamily); i++)
{
if (HostSocketFamily[i] == x)
return i;
}
return x;
}
static int
GetType(int x)
{
return (x < rangeof(HostSocketType)) ? HostSocketType[x] : x;
}
static int
GetProtocol(int x)
{
return (x < rangeof(HostSocketProtocol)) ? HostSocketProtocol[x] : x;
}
static int
GetOption(int x)
{
int iOption = 0;
int i;
for (i = 0; i < rangeof(HostSocketOption); i++)
{
if (x & HostSocketOption[i].iWindows)
iOption |= HostSocketOption[i].iHost;
}
return iOption;
}
extern void PacketTransmitData (void *pvData, int iDataLen, int iStream);
struct
{
int iErrnoHost;
int iErrnoDos;
} error_mappings[] =
{
{ 0, 0 },
{ EINTR, WSAEINTR },
{ EBADF, WSAEBADF },
{ EINVAL, WSAEINVAL },
{ EMFILE, WSAEMFILE },
{ EWOULDBLOCK, WSAEWOULDBLOCK },
{ EINPROGRESS, WSAEINPROGRESS },
{ EALREADY, WSAEALREADY },
{ ENOTSOCK, WSAENOTSOCK },
{ EDESTADDRREQ, WSAEDESTADDRREQ },
{ EMSGSIZE, WSAEMSGSIZE },
{ EPROTOTYPE, WSAEPROTOTYPE },
{ ENOPROTOOPT, WSAENOPROTOOPT },
{ EPROTONOSUPPORT, WSAEPROTONOSUPPORT },
{ ESOCKTNOSUPPORT, WSAESOCKTNOSUPPORT },
{ EOPNOTSUPP, WSAEOPNOTSUPP },
{ EPFNOSUPPORT, WSAEPFNOSUPPORT },
{ EAFNOSUPPORT, WSAEAFNOSUPPORT },
{ EADDRINUSE, WSAEADDRINUSE },
{ EADDRNOTAVAIL,WSAEADDRNOTAVAIL },
{ ENETDOWN, WSAENETDOWN },
{ ENETUNREACH, WSAENETUNREACH },
{ ENETRESET, WSAENETRESET },
{ ECONNABORTED, WSAECONNABORTED },
{ ECONNRESET, WSAECONNRESET },
{ ENOBUFS, WSAENOBUFS },
{ EISCONN, WSAEISCONN },
{ ENOTCONN, WSAENOTCONN },
{ ESHUTDOWN, WSAESHUTDOWN },
{ ETOOMANYREFS, WSAETOOMANYREFS },
{ ETIMEDOUT, WSAETIMEDOUT },
{ ECONNREFUSED, WSAECONNREFUSED },
{ ELOOP, WSAELOOP, },
{ ENAMETOOLONG, WSAENAMETOOLONG },
{ EHOSTDOWN, WSAEHOSTDOWN },
{ EHOSTUNREACH, WSAEHOSTUNREACH },
{ -1, -1 }
}, h_error_mappings[] =
{
{ 0, 0 },
{ HOST_NOT_FOUND, WSAHOST_NOT_FOUND },
{ TRY_AGAIN, WSATRY_AGAIN },
{ NO_RECOVERY, WSANO_RECOVERY },
{ NO_DATA, WSANO_DATA },
{ -1, -1 }
};
/* some functions to allow us to copy integer data
* to and from unaligned addresses
*/
static unsigned short
ToShort(char *pchData)
{
short n;
memcpy(&n, pchData, sizeof(short));
return n;
}
static long
ToLong(char *pchData)
{
long n;
memcpy(&n, pchData, sizeof(long));
return n;
}
static void
FromShort(char *pchData, unsigned short n)
{
memcpy(pchData, &n, sizeof(short));
}
static void
FromLong(char *pchData, long n)
{
memcpy(pchData, &n, sizeof(long));
}
static long
GetIntVal(struct func_arg *pfa)
{
switch(pfa->at)
{
case AT_Int16:
case AT_Int16Ptr:
return ntohs(ToShort(pfa->pvData));
case AT_Int32:
case AT_Int32Ptr:
return ntohl(ToLong(pfa->pvData));
}
}
void
SetIntVal(struct func_arg *pfa, long iVal)
{
switch(pfa->at)
{
case AT_Int16:
case AT_Int16Ptr:
FromShort(pfa->pvData,htons((short) iVal));
return;
case AT_Int32:
case AT_Int32Ptr:
FromLong(pfa->pvData, htonl((short) iVal));
return;
}
};
struct sockaddr *
ConvertSA(struct func_arg *pfa, struct sockaddr_in *sin)
{
u_short tmp;
memcpy(sin, pfa->pvData, sizeof(*sin));
tmp = *(u_short *) sin;
*(u_short *) sin = 0;
sin->sin_family = GetFamily(ntohs(tmp));
return (struct sockaddr *) sin;
}
struct sockaddr *
ConvertSABack(struct func_arg *pfa, struct sockaddr_in *sin)
{
u_short tmp;
tmp = sin->sin_family;
tmp = RevFamily(tmp);
*(u_short *) sin = htons(tmp);
memcpy(pfa->pvData, sin, sizeof(*sin));
return (struct sockaddr *) sin;
}
int
MapError(int iError)
{
int i;
for (i = 0; error_mappings[i].iErrnoHost != -1; i++)
{
if (error_mappings[i].iErrnoHost == iError)
return error_mappings[i].iErrnoDos;
}
return WSAEFAULT;
}
int
MapHError(int iError)
{
int i;
for (i = 0; h_error_mappings[i].iErrnoHost != -1; i++)
{
if (h_error_mappings[i].iErrnoHost == iError)
return h_error_mappings[i].iErrnoDos;
}
return WSAEFAULT;
}
int
CopyString(void *pvData, char *pchString, int iMax)
{
char *pchData;
int iLen;
pchData = (char *) pvData;
iLen = strlen(pchString);
if (iLen + 1 > iMax - 1)
return 0;
strcpy(pchData, pchString);
return iLen + 1;
}
void
CopyHostEnt(void *pvData, struct hostent *phe)
{
int iLocation;
char *pchData;
int i;
pchData = (char *) pvData;
FromShort(pchData, htons(phe->h_addrtype));
FromShort(pchData + sizeof(short), htons(phe->h_length));
for (i = 0; phe->h_addr_list[i]; i++);
FromShort(pchData + sizeof(short) * 2, htons(i));
iLocation = sizeof(short) * 3;
for (i = 0; phe->h_addr_list[i]; i++)
{
memcpy(pchData + iLocation, phe->h_addr_list[i], 4);
iLocation += 4;
}
iLocation += CopyString(pchData + iLocation,
phe->h_name,
MAX_HOST_ENT - iLocation);
for (i = 0; phe->h_aliases[i]; i++)
{
iLocation += CopyString(pchData + iLocation,
phe->h_aliases[i],
MAX_HOST_ENT - iLocation);
}
pchData[iLocation] = 0;
}
void
CopyNetEnt(void *pvData, struct netent *pne)
{
int iLocation;
char *pchData;
int i;
pchData = (char *) pvData;
FromShort(pchData, htons(pne->n_addrtype));
FromLong(pchData + sizeof(short), pne->n_net);
iLocation = sizeof(short) + sizeof(long);
iLocation += CopyString(pchData + iLocation,
pne->n_name,
MAX_HOST_ENT - iLocation);
for (i = 0; pne->n_aliases[i]; i++)
{
iLocation += CopyString(pchData + iLocation,
pne->n_aliases[i],
MAX_HOST_ENT - iLocation);
}
pchData[iLocation] = 0;
}
void
CopyServEnt(void *pvData, struct servent *pse)
{
int iLocation;
char *pchData;
int i;
pchData = (char *) pvData;
FromShort(pchData, pse->s_port); /* No htons - already in network order */
iLocation = sizeof(short);
iLocation += CopyString(pchData + iLocation,
pse->s_proto,
MAX_HOST_ENT - iLocation);
iLocation += CopyString(pchData + iLocation,
pse->s_name,
MAX_HOST_ENT - iLocation);
for (i = 0; pse->s_aliases[i]; i++)
{
iLocation += CopyString(pchData + iLocation,
pse->s_aliases[i],
MAX_HOST_ENT - iLocation);
}
pchData[iLocation] = 0;
}
void
CopyProtoEnt(void *pvData, struct protoent *ppe)
{
int iLocation;
char *pchData;
int i;
pchData = (char *) pvData;
FromShort(pchData, htons(ppe->p_proto));
iLocation = sizeof(short);
iLocation += CopyString(pchData + iLocation,
ppe->p_name,
MAX_HOST_ENT - iLocation);
for (i = 0; ppe->p_aliases[i]; i++)
{
iLocation += CopyString(pchData + iLocation,
ppe->p_aliases[i],
MAX_HOST_ENT - iLocation);
}
pchData[iLocation] = 0;
}
void
SwapSockOptIn( struct func_arg *pfa,
int iOpt)
{
int iValue;
char *pchData;
pchData = (char *) pfa->pvData;
if (iOpt == SO_LINGER)
{
FromShort(pchData, ntohs(ToShort(pchData)));
FromShort(pchData + sizeof(short),
ntohs(ToShort(pchData + sizeof(short))));
}
else
{
FromLong(pchData, ntohl(ToLong(pchData)));
}
}
void
SwapSockOptOut( struct func_arg *pfa,
int iOpt)
{
int iValue;
char *pchData;
pchData = (char *) pfa->pvData;
if (iOpt == SO_LINGER)
{
FromShort(pchData, htons(ToShort(pchData)));
FromShort(pchData + sizeof(short),
htons(ToShort(pchData + sizeof(short))));
}
else
{
FromLong(pchData, htonl(ToLong(pchData)));
}
}
int
CompressArg( struct tx_request *ptxr,
struct func_arg *pfaArgs,
int nArgs,
struct func_arg *pfaResult,
int iArg)
{
struct func_arg *pfaNow;
char *pchNewData, *pchData;
int i, j;
int nLen;
pchData = pchNewData = ptxr->pchData;
for (i = 0; i <= nArgs; i++)
{
if (i < nArgs)
pfaNow = pfaArgs + i;
else
pfaNow = pfaResult;
for (j = 0; j < pfaNow->iLen + 4; j++)
pchNewData[j] = pchData[j];
pchData += pfaNow->iLen + 4;
if (i == iArg)
{
pfaNow->iLen = 0;
*(short *) (pchNewData + 2) = 0;
}
pchNewData += pfaNow->iLen + 4;
}
nLen = pchNewData - ptxr->pchData + 10;
ptxr->nLen = htons((short) nLen);
return nLen;
}
void
GetPortRange( short iInPort,
short *piStartPort,
short *piEndPort)
{
char achBuffer[1024];
char achPort[20];
char *pchComma;
sprintf(achPort, "%d", (int) iInPort);
GetTwinSockSetting("Mappings",
achPort,
"",
achBuffer,
sizeof(achBuffer));
if (!*achBuffer || !(pchComma = (char *) strchr(achBuffer, ',')))
{
*piStartPort = *piEndPort = iInPort;
return;
}
*pchComma++ = 0;
*piStartPort = atoi(achBuffer);
*piEndPort = atoi(pchComma);
}
void
SendRemapMessage( short iFrom,
short iTo)
{
char achBuffer[1024];
char achPortDesc[50];
char achPort[20];
struct tx_request *ptxr;
sprintf(achPortDesc, "Port %d", (int) iFrom);
sprintf(achPort, "%d", (int) iFrom);
GetTwinSockSetting("PortNames",
achPort,
achPortDesc,
achBuffer,
sizeof(achBuffer));
strcat(achBuffer, " remapped to ");
sprintf(achPortDesc, "Port %d", (int) iTo);
sprintf(achPort, "%d", (int) iTo);
GetTwinSockSetting("PortNames",
achPort,
achPortDesc,
achBuffer + strlen(achBuffer),
sizeof(achBuffer) - strlen(achBuffer));
ptxr = (struct tx_request *) malloc(11 + strlen(achBuffer));
ptxr->iType = htons(FN_Message);
ptxr->nArgs = 0;
ptxr->nLen = htons(11 + strlen(achBuffer));
ptxr->id = -1;
ptxr->nError = 0;
strcpy(ptxr->pchData, achBuffer);
PacketTransmitData(ptxr, 10 + strlen(achBuffer) + 1, -2);
free(ptxr);
}
void
Get_Arguments( struct tx_request *ptxr,
struct func_arg **ppfaArgs,
struct func_arg *pfaResult,
int *pnArgs)
{
int i, nArgs;
char *pchData;
struct func_arg *pfaArgs, faResult;
nArgs = ntohs(ptxr->nArgs);
pfaArgs = (struct func_arg *) malloc(sizeof(struct func_arg) * nArgs);
pchData = ptxr->pchData;
for (i = 0; i < nArgs; i++)
{
pfaArgs[i].at = (enum arg_type) ntohs(ToShort(pchData));
pchData += sizeof(short);
pfaArgs[i].iLen = ntohs(ToShort(pchData));
pchData += sizeof(short);
pfaArgs[i].pvData = pchData;
pchData += pfaArgs[i].iLen;
}
faResult.at = (enum arg_type) ntohs(ToShort(pchData));
pchData += sizeof(short);
faResult.iLen = ntohs(ToShort(pchData));
pchData += sizeof(short);
faResult.pvData = pchData;
*ppfaArgs = pfaArgs;
*pfaResult = faResult;
*pnArgs = nArgs;
}
void
ResponseReceived(struct tx_request *ptxr_)
{
enum Functions ft;
int nArgs;
short nLen;
short id;
short iInPort;
short iStartPort;
short iEndPort;
short iPort;
int iLen;
int iValue;
int iSocket;
int nOptName;
int nOptVal;
short nError;
struct tx_request *ptxr;
struct func_arg *pfaArgs;
struct func_arg faResult;
struct sockaddr_in sin;
char *pchData;
int i;
int iErrorSent;
int iOffset;
struct hostent *phe;
struct netent *pne;
struct servent *pse;
struct protoent *ppe;
nLen = ntohs(ptxr_->nLen);
ptxr = (struct tx_request *) malloc(nLen);
memcpy(ptxr, ptxr_, nLen);
ft = (enum Functions) ntohs(ptxr->iType);
Get_Arguments(ptxr, &pfaArgs, &faResult, &nArgs);
iErrorSent = 0;
errno = 0;
h_errno = 0;
if (ft != FN_Socket && HasSocketArg(ft))
{
iSocket = GetServerFromClient(GetIntVal(&pfaArgs[0]));
if (iSocket == -1)
{
ptxr->nError = htons(WSAENOTSOCK);
ptxr->nLen = htons(sizeof(short) * 5);
PacketTransmitData(ptxr, sizeof(short) * 5, -2);
iErrorSent = 1;
ft = (enum Functions) -1;
}
}
switch(ft)
{
case FN_IOCtl:
case FN_Accept:
case FN_Select:
case FN_Data:
ptxr->nError = htons(WSAEOPNOTSUPP);
ptxr->nLen = htons(sizeof(short) * 5);
PacketTransmitData(ptxr, sizeof(short) * 5, -2);
iErrorSent = 1;
break;
case FN_Send:
SetIntVal(&faResult, GetIntVal(&pfaArgs[2]));
QueueSendRequest(iSocket,
pfaArgs[1].pvData,
GetIntVal(&pfaArgs[2]),
GetIntVal(&pfaArgs[3]),
0);
nLen = CompressArg(ptxr, pfaArgs, nArgs, &faResult, 1);
errno = 0;
break;
case FN_SendTo:
SetIntVal(&faResult, GetIntVal(&pfaArgs[2]));
QueueSendRequest(iSocket,
pfaArgs[1].pvData,
GetIntVal(&pfaArgs[2]),
GetIntVal(&pfaArgs[3]),
ConvertSA(&pfaArgs[4], &sin));
nLen = CompressArg(ptxr, pfaArgs, nArgs, &faResult, 1);
errno = 0;
break;
case FN_Bind:
ConvertSA(&pfaArgs[1], &sin);
iInPort = ntohs(sin.sin_port);
GetPortRange(iInPort, &iStartPort, &iEndPort);
for (iPort = iStartPort; iPort <= iEndPort; iPort++)
{
errno = 0;
sin.sin_port = htons(iPort);
iValue = bind(iSocket,
(struct sockaddr *) &sin,
GetIntVal(&pfaArgs[2]));
if (!iValue)
{
iLen = sizeof(sin);
getsockname(iSocket,
(struct sockaddr *) &sin,
&iLen);
ConvertSABack(&pfaArgs[1], &sin);
if (iPort != iInPort)
SendRemapMessage(iInPort, iPort);
break;
}
}
SetIntVal(&faResult, iValue);
break;
case FN_Connect:
iValue = connect(iSocket,
ConvertSA(&pfaArgs[1], &sin),
GetIntVal(&pfaArgs[2]));
SetIntVal(&faResult, iValue);
if (iValue != -1)
{
BumpLargestFD(iSocket);
iLen = sizeof(sin);
getsockname(iSocket,
(struct sockaddr *) &sin,
&iLen);
ConvertSABack(&pfaArgs[1], &sin);
errno = 0;
}
else if (errno == EINPROGRESS)
{
SetWriter(iSocket);
QueueConnectWait(iSocket, ptxr);
iErrorSent = 1;
}
break;
case FN_Close:
SetIntVal(&faResult,
close(iSocket));
iValue = GetIntVal(&pfaArgs[0]);
FlushStream(iValue);
SetClosed(iSocket);
ReleaseSocketEntry(iValue);
ReleaseServerSocket(iValue);
break;
case FN_Shutdown:
SetIntVal(&faResult,
shutdown(iSocket,
GetIntVal(&pfaArgs[1])));
if (GetIntVal(&pfaArgs[1]) != 1)
SetClosed(iSocket);
break;
case FN_Listen:
iValue = listen(iSocket,
GetIntVal(&pfaArgs[1]));
SetIntVal(&faResult, iValue);
if (iValue != -1)
{
BumpLargestFD(iSocket);
SetListener(iSocket);
}
break;
case FN_Socket:
iSocket = socket(GetFamily(GetIntVal(&pfaArgs[1])),
GetType(GetIntVal(&pfaArgs[2])),
GetProtocol(GetIntVal(&pfaArgs[3])));
SetIntVal(&faResult,iSocket);
if (iSocket != -1)
{
AddSocketEntry(GetIntVal(&pfaArgs[0]), iSocket);
BumpLargestFD(iSocket);
nOptVal = 1;
iLen = sizeof(nOptVal);
setsockopt(iSocket,
SOL_SOCKET,
SO_OOBINLINE,
(char *) &nOptVal,
iLen);
iValue = fcntl(iSocket, F_GETFL, 0);
iValue |= FNDELAY;
fcntl(iSocket, F_SETFL, iValue);
errno = 0;
}
break;
case FN_GetPeerName:
iLen = GetIntVal(&pfaArgs[2]);
iValue = getpeername(iSocket,
(struct sockaddr *) pfaArgs[1].pvData,
&iLen);
if (iValue != -1)
{
SetIntVal(&faResult, iValue);
SetIntVal(&pfaArgs[2], iValue);
iValue = ((struct sockaddr *) pfaArgs[1].pvData)->
sa_family;
iValue = RevFamily(iValue);
iValue = htons((short) iValue);
((struct sockaddr *) pfaArgs[1].pvData)->sa_family =
(short) iValue;
}
break;
case FN_GetSockName:
iLen = GetIntVal(&pfaArgs[2]);
iValue = getsockname(iSocket,
(struct sockaddr *) pfaArgs[1].pvData,
&iLen);
if (iValue != -1)
{
SetIntVal(&faResult, iValue);
SetIntVal(&pfaArgs[2], iValue);
iValue = ((struct sockaddr *) pfaArgs[1].pvData)->
sa_family;
iValue = RevFamily(iValue);
iValue = htons((short) iValue);
((struct sockaddr *) pfaArgs[1].pvData)->sa_family =
(short) iValue;
}
break;
case FN_GetSockOpt:
iLen = GetIntVal(&pfaArgs[4]);
nOptName = GetOption(GetIntVal(&pfaArgs[2]));
iValue = getsockopt( iSocket,
GetIntVal(&pfaArgs[1]),
nOptName,
(char *) pfaArgs[3].pvData,
&iLen);
if (iValue != -1)
{
SwapSockOptOut(&pfaArgs[3],
nOptName);
SetIntVal(&pfaArgs[4], iLen);
}
SetIntVal(&faResult, iValue);
break;
case FN_SetSockOpt:
iLen = GetIntVal(&pfaArgs[4]);
nOptName = GetOption(GetIntVal(&pfaArgs[2]));
SwapSockOptIn(&pfaArgs[3],
nOptName);
iValue = setsockopt( iSocket,
SOL_SOCKET,
nOptName,
(char *) pfaArgs[3].pvData,
iLen);
SwapSockOptOut(&pfaArgs[3],
nOptName);
SetIntVal(&faResult, iValue);
break;
case FN_GetHostName:
SetIntVal(&faResult,
gethostname((char *) pfaArgs[0].pvData,
GetIntVal(&pfaArgs[1])));
break;
case FN_HostByAddr:
phe = gethostbyaddr((char *) pfaArgs[0].pvData,
GetIntVal(&pfaArgs[1]),
GetIntVal(&pfaArgs[2]));
if (phe)
{
h_errno = 0;
CopyHostEnt(faResult.pvData, phe);
}
break;
case FN_HostByName:
phe = gethostbyname((char *) pfaArgs[0].pvData);
if (phe)
{
h_errno = 0;
CopyHostEnt(faResult.pvData, phe);
}
else if (!h_errno)
{
h_errno = TRY_AGAIN;
}
break;
case FN_ServByPort:
if (pfaArgs[0].at == AT_Int16)
iValue = *(short *) pfaArgs[0].pvData;
else
iValue = *(long *) pfaArgs[0].pvData;
pse = getservbyport(iValue,
(char *) pfaArgs[1].pvData);
if (pse)
{
h_errno = 0;
CopyServEnt(faResult.pvData, pse);
}
else
{
h_errno = NO_DATA;
}
break;
case FN_ServByName:
pse = getservbyname((char *) pfaArgs[0].pvData,
(char *) pfaArgs[1].pvData);
if (pse)
{
h_errno = 0;
CopyServEnt(faResult.pvData, pse);
}
else
{
h_errno = NO_DATA;
}
break;
case FN_ProtoByNumber: